Finite element investigation of the loading rate effect on the spinal load-sharing changes under impact conditions
type: Dataset
description: Sudden deceleration and frontal/rear impact configurations involve rapid movements that can cause spinal injuries. This study aimed to investigate the rotation rate effect on the L2-L3 motion segment load-sharing and to identify which spinal structure is at risk of failure and at what rotation velocity the failure may initiate? Five degrees of sagittal rotations at different rates were applied in a detailed finite-element model to analyze the responses of the soft tissues and the bony structures until possible fractures. The structural response was markedly different under the highest velocity that caused high peaks of stresses in the segment compared to the intermediate and low velocities. Under flexion, the stress was concentrated at the upper pedicle region of L2 and fractures were firstly initiated in this region and then in the lower endplate of L2. Under extension, maximum stress was located in the lower pedicle region of L2 and fractures started in the left facet joint, then they expanded in the lower endplate and in the pedicle region of L2. No rupture has resulted at the lower or intermediate velocities. The intradiscal pressure was higher under flexion and decreased when the endplate was fractured, while the contact forces were greater under extension and decreased when the facet surface was cracked. The highest ligaments stresses were obtained under flexion and did not reach the rupture values. The endplate, pedicle and facet surface represented the potential sites of bone fracture. Results showed that spinal injuries can result at sagittal rotation velocity exceeding 0.51/ms. High-speed impact ; Lumbar spine ; Stress ; Bone fracture ; Injury ; Finite-element analysis
issued: 2026-05-10T04:45:47.562776
language: en
modified: 2026-05-10T04:45:47.562781
contact point: Organization
  fn: CCSD
keyword: choc
keyword: colonne-vertebrale
keyword: comportement-aux-chocs
keyword: elements-finis-methode
keyword: fracture-os
keyword: grande-vitesse
keyword: infoeu-reposemanticsarticle
keyword: journal-articles
keyword: methode-des-elements-finis
keyword: sdviblife-sciences-q-biobioengineering
landing page: 0021-9290

Finite element investigation of the loading rate effect on the spinal load-sharing changes under impact conditions
type: Distribution
format: HTML
issued: 2026-05-10T04:45:47.564810
modified: 2026-05-10T04:45:47.553420
access URL: https://hal.science/hal-00849226

test_moissonnage_selune
type: Agent